PyObjectPtr: Minor improvements

PyCore/Embed/PyObjectPtr.cpp

 #include "PyObjectPtr.h"
 #include "PythonInterpreter.h"
 
-#include <exception> // runtime_error
-#include <sstream> // stringstream
+#include <stdexcept> // runtime_error
 #include <string>
 
 

PyCore/Embed/PyObjectPtr.h

@@ -45,19 +45,13 @@ public:
     Status status;
 
     PyObjectPtr(PyObject* pyobject_ptr, const Status& status);
-
     PyObjectPtr(PyObject* pyobject_ptr);
-
     PyObjectPtr(const Status& status);
-
     ~PyObjectPtr();
-
-    // disallow copy constructor
     PyObjectPtr(const PyObjectPtr&) = delete;
-    // disallow copy assignment
-    PyObjectPtr& operator=(const PyObjectPtr&) = delete;
-    // allow move constructor
     PyObjectPtr(PyObjectPtr&& other);
+    PyObjectPtr& operator=(const PyObjectPtr&) = delete;
+
     // reset the container to the initial status (does _not_ release the Python resource)
     void reset();
     // reset the container to the initial status and return the PyObject pointer (does _not_ release